Wheel.



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J. E. ZIMMERMAN.

WHEEL APPLICATION FILED MAY 26 1905.

FIG]

WITNESSES:

No. 849,309. PATENTED APR. 2, 1907.

J. E; ZIMMEEMAN.

WHEEL.

APPLICATION FILED MAY 26, 1905,

3 SHEETS-SHEET 2.

P9 S I S 910 WITNESSES:

1n: NORRIS FETERS co, WASHINGTON, m c.

PATENTED APR. '2, 1907.

J. E. ZIMMERMAN.

WHEEL. APPLICATION FILED MAY 26, 1905.

a SHEETS-SHEET a.

JNVENTORi JUf/IYiZ/M/Vf/T 1m: uomus PELERS cm, WASHINGION, n. c.

UNITED STATES PAEENT OFFICE.

JOHN E. ZIMMERMAN N OF l/VILLOW GROVE, PENNSYLVANIA, ASSIGNOR TO THEAMERICAN PULLEY COMPANY, OF PHILADELPHIA, PEN N SYLVA- NIA, ACORPORATION OF PENNSYLVANIA.

WHEEL.

Specification of Letters Patent.

Patented April 2, 1907.

To cbZl w/wm, it Wtcty concern:

Be it known that I, JOHN E. ZIMMERMANN, of Willow Grove, in the State ofPennsylvania, have invented certain new and useful Improvements inI/Vheels, whereof the following is a specification, reference being hadto the accompanying drawings.

My improvements are particularly appli cable to spoked wheelsconstructed wholly of metal; and it is the object of my invention toform such a wheel with braces arranged to resist the torsional strainsat the junction of the spokes with the rim at less cost of manufacturethan heretofore.

As hereinafter described, my invention comprises a pulley having a metalhub and spoke members formed of pressed sheet metal secured to said huband to inwardly-turned flanges of sectoral sections of sheet metalforming the wheelrim. Said spoke members are disposed in pairs whichconverge radially outwardly from the hub to the rimflanges aforesaid andembrace between their outer ends and said rim-flanges oppositecounterpart gusset-plates of greater circumferential extent than theends of said spoke members and of greater radial extent than saidrim-flanges Said rim-sections may be arranged in two circumferentialseries with their joints in staggered relation, said gussetplates beingarranged to bridge said joints and maintain said sections in rigidrelation.

My invention comprehends the various novel features of construction andarrangement hereinafter more definitely specified.

In the drawin 's, Figure I is a side elevation of a split pul eyconveniently embodying my improvements. Fig. II is a diametricalsectional view of said wheel, taken on the line II II in Fig. I. Fig.III is a tan ential sectional view of said wheel, taken on t e line IIIIII in Fig. I. Fig. IV is a side elevation of a whole pulley, showing amodified form of my invention. Fig. V is a radial sectional view takenon the line V V in Fig. IV.

Referring to the form of my invention shown in Figs. I, II, and III, thehub comprises opposed counterpart semicylindrical sections 1 and 2, ofpressed sheet metal, arranged to embrace a shaft. Said hub-sections arerovided at their opposite ends with semicircu ar flanges 4 and 5, withwhich the spoke members 7 and 8 are in integral relation, said membersbeing disposed in pairs in axial alinement converging outwardly from thehub to the rim to embrace the inwardly-turned flanges 9 and 10 on theaxially-alined semicylindrical sheet-metal mem bers 11 and 12, whichconstitute the rim.

The gusset-plates 13 are arranged between the outer ends of said spokemembers 7 and 8 and said flanges 9 and 10, on opposite sides of thelatter, as best shown in Fig. II, and the spaces between the inner edgesof said gusset-plates are preferably filled by plates 14 of the samethickness as said flanges, as shown in Fig. II. Said spoke members 7 and8 are secured in rigid relation with said gusset-plates 13 by the rivets15, which extend through said s oke members and the flanges 9 and 10,and by the rivets 17 upon opposite sides of the ends of said spokemembers, as shown in Fig. I, which extend only through the gusset-plates13 and said flanges 9 and 10. Said hubflanges 4 and 5 are secured to thehubsec tions 1 and 2 by the rivets 20 and 21, and, as shown in Figs. Iand II, said rivets 20 extend through and also secure the hollowsheet-metal bolt-brackets 22 and 23, which are counterpart andrespectively carried by the opposed hub-sections 1 and 2, as shown inFig. I.

As indicated in Fig. I, the hub and rim of the wheel are divided andseparable on their common horizontal diameter, and it is to beunderstood that the Wheelmay be securely clamped on a shaft by the bolts28 and 29, Which extend through said brackets 22 and 23 and are providedwith the nuts 30. The outer edges of said rim-sections 11 and 12 areconveniently connected together by the bolts 32 and 33, extendingthrough the brackets 34 and 35, riveted to the respective rim-sections,which latter are also conveniently reinforced at their outercircumferential edges by inwardly-turned curved flanges 37, which may behollow or inclose metal rods. However, it is to be understood that myinvention may be embodied in a whole pulley such, for instance, as isshown in Figs. IV and V, wherein the hub 38, which may be conveninetlyformed of cast metal, is provided with annular flanges 39 upon therespectively opposite sides of pairs of spoke members 10, which convergeradially outward to embrace the inwardly-turned flanges 41 on theaxially alined semicylindrical sheet-metal members 42 and 43, which arearranged in two circumferential series having their joints 44 and 45 instaggered relation. The gusset-plates 47 are arranged between the endsof said spoke members 40 and flanges 41 on opposite sides of the latterin axial alinement, so as to bridge the joints between said rim members,and the spaces between the inner edges of said gusset-plates 47 arepreferably filled by spacing-plates 49 of the same thickness as saidflanges 41, as indicated in FigV. Said spoke members 40 are secured inrigid relation with said gusset-plates 4.7 by the rivets 50, which extend through said spokes and the spacin plates 49; by the rivets 51,which extend through said spoke members 40 and the flanges 41, and bythe rivets 53 upon opposite sides of the ends of said spoke members 40,as shown in Fig. I, which extend only through the gusset-plates 47 andsaid flanges 41. The outer edges of said rim members 42 and 43 areconveniently reinforced by inwardly-turned curved flanges 55, which maybe hollow or may inclose metal rods 56, the latter being either local tothe joints 44 and 45 or extending throughout the circumference of therim.

I claim 1. In a wheel, the combination with a sheet-metal rim comprisingsectoral members; of plane gusset-plates extending in a plane at rightangles to the axis of the wheel and bridging the joints between saidmembers, substantially as set forth.

2. In a wheel, the combination witha sheet-metal rim comprisingaxially-alined semicylindrical members; of plane gussetplates extendingin a plane at right angles to the axis of the wheel and bridging thejoints between said members, substantially as set forth.

3. In a wheel, the combination with a sheet-metal rim, comprisingaxially-alined sectoral members having their joints in staggeredrelation; of plane gusset-plates ex tending in a plane at right anglesto the axis of the wheel and bliC ging the joints between said members,substantially as set forth.

4. In a wheel, the combination with a sheet-metal rim comprisingsectoral members having inwardly-turned flanges extending in a plane atright angles to the axis of the wheel; of plane gusset-plates extendingparallel with said flanges and bridging the joints between said members;and, means securing said gusset-plates in rigid relation to saidflanges, substantially as set forth.

5. In a Wheel, the combination with a sheet-metal rim comprisingaxially-alined sectoral members, having their joints in staggeredrelation; of plane gusset-plates extending in a plane at right angles tothe axis of the wheel, and bridging the joints between said members;and, means securing said rim members and gusset-plates in rigidrelation, substantially as set forth.

6. In a wheel, the combination with a sheet-metal rim compris ngaxially-alined sectoral members having their joints in staggeredrelation; of plane gusset-plates extending in a plane at right angles tothe axis of the wheel, and bridging the joints between said members,and, means securing said rim members and gusset-plates in rigidrelation, comprising spoke members and rivets extending through thesame, substan tially as set forth.

7. In a wheel, the combination with a rim comprising sectoral sections;of a hub; spoke members connecting said rim and hub having plane endsoverlapping the joints between the rim-sections; plane gusset-platesoverlapping the joints between said rim-sections and extending in aplane at right angles to the axis of thewheel; and, means extendingthrough said spoke members, gusset-plates and rim-sections securing themin rigid rela tion, substantially as set forth.

8. In a wheel, the combination with a rim comprising axiallyalinedsections having inwardly-extending central circumferential flanges; ofspoke members having ends engaged with said flanges; plane gusset-plateslocal to said spoke members, of greater radial extent than said flanges;filling-plates disti ct from said flanges and from said spoke members,interposed between the latter; and, means extending through said spokemembers, gusset-plates and filling-plates securing tnem in rigidrelation, substantially as set forth.

In testimony whereof I have hereunto signed my name, at Philadelphia, inthe State of Pennsylvania, this 24th day of May,

JOHN E. ZIh IMERh IANN. Witnesses:

' WM. R. SIMPsoN,

Josnrn ENrwIsLE.

